Caption: Arthritis. Ankle of a 66-year-old man suffering from osteoarthritis. Osteoarthritis is a joint disease in which the internal surfaces are rubbed away, and is usually associated with aging. Symptoms include pain, stiffness & swelling. There is no cure, although the symptoms can be relieved with drugs. This patient had previously undergone surgery to fuse the ankle joint (arthrodesis) as it had become unstable due to a polio infection.